How To Download Facebook Messenger For PC

Recently facebook launched facebook messenger to enable users to do other things online and still know what is happening on their facebook wall. The Facebook Messenger lets you use Facebook without being on www.facebook.com and allows you to easily find out about , photo tags, new comments and other things
How To Download the messenger:

1. Go to http://www.facebook.com/about/messenger  &  click the "Install Now" button
2 .Click on the Save File to set up Facebook Messenger. 
3. The last thing is to  Run the downloaded file.
N.B: This app works for windows 7 now. The Facebook team is still working for it to work on lower windows like windows XP. For instance, am using windows XP so i cannot use it for now